The rocker arm ratio effectively multiplies the amount of lift from the camshaft and applies it opening the valve. For instance, a typical small-block Chevy like the much-maligned 305 has a stock ...

The rocker arm acts as a lever and creates increased lift to the valve through the rocker ratio. A rocker ratio of 1.5:1 increases cam lift by half as much. For example, ...

In this article we provide Corvette enthusiasts with everything they need to know about rocker arms and Small Block Chevy valvetrain tech prior to modifying their Chevrolet Corvettes - Vette Magazine ...

If we lower the rocker arm mount to bring the roller tip near centerline, we need to move the rocker down 0.325 inch. Our roller tip sweep path increases in width from a correct geometry width of ...

The rocker arm ratio effectively multiplies the amount of lift from the camshaft and applies it opening the valve. For instance, a typical small-block Chevy like the much-maligned 305 has a stock ...

How Rockers Add PowerThe rocker arm mechanically multiplies the cam's lobe lift. It does this by moving the pushrod closer to the fulcrum pivot point than the valve stem tip is.

Can roller rocker arms actually help add horsepower? The mechanically savvy will likely consider that question and say: “If you have more lift, and open the valves more, then you’ll make more ...

Q I own a '99 Chevy Lumina with a 3.1-liter V6. This weekend I got a flashing check-engine light with a severe misfire. I took the vehicle to a shop, which told me I had two rocker arms blown ...

Next is to set the rocker assemblies up. Bolt them on the heads as they’d normally sit and torque them to spec . If you’re working with a Chrysler B or RB engine, 25 lb-ft is your magic number.